Name: Contrec 104D.2
Brand: Contrec
SKU: 104D.2
Availability: InStock

Input Signal: Frequency
Accuracy: +/-0.05%
Weatherproof Rating: IP67
Power Source: mA Loop-Powered
Alarm (Open Collector): High & Low
Linear Pulse Output: Yes
Mounting Type: Wall Mount

Contrec Model 104D Technical Specifications
● POWER SECTION
Power Input Requirements	Loop Powered: 4 to 20 mA DC current loop connection. Voltage Drop: 4.3 Vdc maximum loop drop threshold. Internal Backup: 2 × Lithium batteries installed as standard; provides up to a 2-year autonomous local display lifespan.
Data Security Retentivity	Integrated non-volatile flash memory permanently stores all configuration parameters, tag constants, resettable totals, and accumulated totals during full loop power blackouts.
● INPUT SECTION
Flowmeter Signal Input	Single digital flow input channel accepting pulse or frequency train inputs. Compatible Sensors: Open Collector, Reed Switch, TTL Logic, Magnetic Pickup, Namur Proximity, or Paddlewheel flow sensors.
Frequency Bandwidth Range	0.1Hz minimum baseline cutoff up to 2kHz maximum high-speed input processing frequency.
K-Factor Scaling Matrix	Fully programmable pulses-per-unit metric system supporting a 10-point non-linear flow linearization curve mapping.
● OUTPUT SECTION
Analog Output Loop	2-wire 4 to 20 mA DC current loop output; tracks real-time flow rate with programmable zero and full scale span mapping.
Digital Output Channels	Two separately opto-isolated solid-state open collector transistor outputs: Output 1 (Pulse): Scaled pulse output channel with software-defined resolution and pulse width. Output 2 (Alarms): Configurable as a combined High Flow Rate and Low Flow Rate limit alarm output. Electrical Rating: Max. 30 Vdc switching voltage, 100mA maximum current capacity in the active “ON” state.
Local Operator Display	High-contrast dual-row alphanumeric LCD display showcasing simultaneous Flow Rate, Resettable Batch Total, and non-resettable Accumulated Total in selected engineering units.
● PERFORMANCE
Totalizer Accuracy Class	Better than ±0.05% of reading for all internal mathematical accumulation calculations.
Analog Loop Precision	±0.1% of full scale range calibration accuracy under reference conditions.
● PHYSICAL
Enclosure Shell Design	Field-mounting enclosure layout molded from heavy-duty, impact-resistant polycarbonate polymers.
Mounting Configuration	Versatile architecture supports flush panel mounting, wall surface installation, or ruggedized pipe track attachment.
Operator Input Interface	Ergonomic elastomeric tactile keypad featuring positive snap-action feedback designed to support glove-wearing operation.
● STANDARDS CONFORMITY
Environmental Protection Class	IP67 dust-tight and weatherproof certified enclosure containment structure (Fully matches NEMA 4X compliance criteria).
CE Certification Baseline	Conforms fully to standard European community electromagnetic compatibility (EMC) and low-voltage electrical safety directives. Manufactured under a certified ISO 9001 quality framework.